Out of a small group of maybe 11 of us, 2 had left after 40 mins, another 2 left within an hour, and thats when I left too. Our guide was bubbly but it was basically her indulging herself in sharing every bit of minutiae she knew about things that interested her, and talking for too long while we were all freezing, as we did far more standing still than walking. 1 hour in we had only moved 2 blocks. This was not artistic / alternative - it was whatever history she was interested in, including where she used to live at the university and how many biology labs are in one of the university buildings. After she’d been talking about a fire in a university building for 20 minutes i zoned out, and when she started talking about fire safety protocols, thats when i left and explored the area myself. Much more enjoyable and i kept my blood flowing too.